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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
91

Estratégias para a sustentabilidade da mineração de rochas ornamentais no noroeste do estado do Espírito Santo

Macedo, Dione January 2016 (has links)
O presente trabalho tem por objetivo contribuir com a atividade de extração de rochas ornamentais, por meio de propostas com recomendações que possam indicar passos a serem seguidos (guidelines) para a sustentabilidade desse setor, utilizando como estudo de caso a região noroeste do Estado do Espírito Santo. Para isso são feitas propostas de planejamento em longo prazo por meio do Processo Prospectivo e, em mais curto prazo, por um esquema de certificação sustentável para a atividade, com vistas à sustentabilidade desse polo produtor, considerando sua importância e os problemas existentes. O Processo Prospectivo, feito mediante a utilização da abordagem inicial do Processo Prospectivo, com a varredura (scanning) do ambiente, e aplicado para a região noroeste do estado do Espírito Santo, apresentou-se como uma ferramenta adequada para atingir os objetivos do presente estudo, principalmente por apontar, a partir dos resultados, além da sua continuidade, também a viabilidade de implementar uma certificação de sustentabilidade para o setor de rochas ornamentais, pela concordância observada nos resultados obtidos, na visão dos stakeholders. Para a proposta de certificação sustentável foi feita uma pesquisa por meio de questionário com stakeholders chave da indústria de rochas ornamentais para identificar a percepção desses com relação à iniciativa, que incluiu tópicos gerais e específicos divididos em três temas principais: sustentabilidade da indústria de rochas ornamentais no Brasil; desafios para a sustentabilidade dessa indústria e deficiências e omissões da regulamentação vigente, relativa a esses desafios; e a viabilidade de um processo de certificação sustentável para a indústria de rochas ornamentais no Espírito Santo e a participação dos stakeholders e de seus órgãos nesse processo. Os resultados obtidos com o desenvolvimento do presente estudo permitem concluir que, na visão dos stakeholders da indústria de rochas ornamentais do Brasil, em especial na visão daqueles do estado de Espírito Santo, a formalização das empresas do setor, aliada a um processo de certificação, tem potencial para gerar benefícios significativos para o desenvolvimento local e/ou regional sustentável, o que coincide com outras experiências apresentadas na literatura vigente. Os resultados também mostraram que ainda há muito a ser estudado antes que uma certificação sustentável seja implementada, mas que há sinais encorajadores para a continuidade do trabalho, pois parte significativa dos stakeholders (sociedade, governo e empresários do setor) respondeu favoravelmente a essa iniciativa para o setor, até mesmo em âmbito nacional. Nesse sentido, é reforçada a importância da cooperação entre o setor, a sociedade e governo federal, estadual e municipal em todo o processo, de modo a se criar uma cultura que possibilite a sustentabilidade efetiva desse setor. Finalmente, o trabalho mostra que, apesar dos desafios existentes, as propostas de continuidade do Processo Prospectivo e de viabilização de um processo de certificação sustentável têm potencial para aprimorar a indústria de rochas ornamentais pela adoção de critérios, que visem não somente as questões de caráter econômico, como aquelas que melhorem a performance social e ambiental para a efetiva sustentabilidade dessa indústria. / This work aims to contribute with dimension stones industry by doing proposals and recommendations of guidelines to the sustainability of this industry, based on northwest region of Espirito Santo State as case study. Long term planning by applying the Foresight and of short term a Sustainability Certification Scheme are proposed in order to achieve the sustainability of the producer pole by considering its relevance and the existents problems. Foresight was applied for the northwest region using an initial approach of Foresight with the scanning of the environment, and it is presented as an appropriate tool to achieve the objectives of this study, mainly to point out from the results not only its continuity, but also the feasibility of implementing a sustainability certification scheme for the dimension stones industry, by the agreement observed in the results, in the view of stakeholders. For the sustainability certification scheme a survey was conducted with key stakeholders of the dimension stones industry to identify their perceptions regarding to the initiative, which included general and specific topics in three themes: sustainability of the dimension stones industry in Brazil; challenges to the sustainability of the dimension stones industry, and deficiencies and omissions of current regulatory processes regarding these challenges; and the feasibility of a sustainability certification scheme for the dimension stones industry in Espírito Santo State and the participation of entities/bodies/agencies in this process. The results obtained with the development of this study allow us to conclude that, in the view of stakeholders of the dimension stone industry in Brazil, especially the Espírito Santo State, the formalization of companies in the industry, combined with a certification process has the potential to generate significant benefits for local and/or regional sustainable development, which coincides with other experiences presented in current literature. The results also showed that there is still too much to be studied before a sustainability certification scheme is implemented, but there are encouraging signs for the continuity of the work, as a significant part of stakeholders (society, government and industry entrepreneurs) responded favorably to this initiative the industry, even at the national level. In this sense, it is reinforced the importance of cooperation between industry, society and federal, state and local government throughout the process, in order to create a culture that enables the sustainability of this sector. Finally, the study shows that despite the existing challenges, proposals for continuity of the Foresight and achieving a sustainability certification scheme have the potential to improve the dimension stones industry by adopting criteria that not only consider the economic issues of the industry, but also to improve its social and environmental performance for effective sustainability of this industry.
92

The analysis of junior secondary science curriculum materials

Green, Peter Anthony, n/a January 1980 (has links)
The study was based on the assumption that the analysis and evaluation of curriculum materials was an appropriate activity to be undertaken by practising teachers. Other studies indicated that teachers perceived a need for objective analyses of curriculum materials and for procedures suitable for use by the practising teacher which could generate information on which rational decisions concerning curriculum materials could be made. A variety of previously published analysis schemes were reviewed according to the criteria of: - range and scope of the scheme; - the relevance of the scheme to practising teachers; - feasibility; - adaptability and flexibility; - data collection procedures; - general considerations (curriculum model, presentation of report). The Sussex scheme (Eraut et al, 1975) was the analysis of junior science curriculum materials. This scheme was used in an analysis of I.S.C.S., "Probing the Natural World" materials. A simplified framework for the analysis of curriculum materials summarised the components of the scheme. In order to derive hard data on some of the effects of using I.S.C.S. materials, a quasi-experiment was attempted. Details of the quasi-experiment were included in this study. The validity of the concept of teacher-as-researcher or teacher-as-evaluator was supported throughout the field study.
93

A buddy scheme to assist the adjustment of high school transfer students

Lawton, Ailsa, n/a January 1979 (has links)
The purpose of the present investigation was to attempt to improve the adjustment of students transferring to a new high school part way through the year by the introduction of a buddy scheme. During the period between March 7th and September 18th, 1978, 54 new students were randomly allocated to an experimental group (i.e. paired with a buddy) or to a 'no buddy' control group for three weeks from the date of their enrolment. The buddies consisted of 12 volunteers from each of years seven to ten, who attended four training sessions with the counsellor (four for each form). The training centred round a discussion of their feelings and needs when encountering new school situations and led to a delineation of practical things which could be done to help new students. Emphasis was also given to communication skills. After the new students had been at the school for a month (or 20 school days), they completed L.S. Wrightsraan's School Morale scale and a student questionnaire which provided two measures of adjustment, viz. the students' perception of whether or not they had formed new friendships and their 'adjustment' to school. At the end of their first two months, the number of days absent (apart from those for sickness) were noted. There was no significant difference between the adjustment of transfer students in the experimental group compared to the control group as measured by the four outcome measures. That is, there was no significant difference between the two groups as measured by School Morale scores, their perception of the formation of new friendships, adjustment to school (a questionnaire measurement) or the mean number of days absent. Buddies with effective communication skills were successful in helping new students make a satisfactory adjustment to their new school. The continuation of the scheme was favoured both by the buddies and by the transfer students. Buddies felt that the scheme helped new students to settle in more quickly to the classes and to make friends. Transfer students felt that the scheme helped them to learn about the school very quickly, to meet the teachers and to make friends.
94

Ground water monitoring system for effluent irrigated areas : a case study of Hawkesbury water recycling scheme

Beveridge, Gavin John, University of Western Sydney, College of Health and Science, School of Natural Sciences January 2006 (has links)
Water recycling schemes are increasingly being implemented across Australia as an effective means of converting wastewater into a valuable resource. There is currently a lack of specific guidelines for the monitoring of groundwater resources associated with these schemes. This is despite it being widely acknowledged that a monitoring system is a fundamental component of a scheme, due to the risk of altering the hydrogeological processes and resource devaluation. The aim of this research was to address this information gap, by developing guidelines that provide a platform for the continuous improvement in groundwater monitoring systems for recycling schemes. To achieve the stated aim, an action research strategy formed the methodological approach for the implementation of the objectives. Existing guidelines for monitoring systems were reviewed, consolidated and refined, in consultation with industry expertise. The developed guidelines were then verified through the implementation of a case study at the Hawkesbury Water Recycling Scheme (HWRS), with the resulting information providing for a preliminary characterisation of the resources. Designed on current best practice, and to meet statutory requirements, the guidelines addressed the identified information gap. The research recommends the integration of groundwater monitoring systems into the environmental management system for recycling schemes, to provide for continuous refinement through the interpretation of the knowledge base developed in previous cycles. Adoption of this practice will initiate improved decision making and management processes, and provide for future resource protection and enhancement. / Master of Science (Hons)
95

Ground water monitoring system for effluent irrigated areas : a case study of Hawkesbury water recycling scheme

Beveridge, Gavin John, University of Western Sydney, College of Health and Science, School of Natural Sciences January 2006 (has links)
Water recycling schemes are increasingly being implemented across Australia as an effective means of converting wastewater into a valuable resource. There is currently a lack of specific guidelines for the monitoring of groundwater resources associated with these schemes. This is despite it being widely acknowledged that a monitoring system is a fundamental component of a scheme, due to the risk of altering the hydrogeological processes and resource devaluation. The aim of this research was to address this information gap, by developing guidelines that provide a platform for the continuous improvement in groundwater monitoring systems for recycling schemes. To achieve the stated aim, an action research strategy formed the methodological approach for the implementation of the objectives. Existing guidelines for monitoring systems were reviewed, consolidated and refined, in consultation with industry expertise. The developed guidelines were then verified through the implementation of a case study at the Hawkesbury Water Recycling Scheme (HWRS), with the resulting information providing for a preliminary characterisation of the resources. Designed on current best practice, and to meet statutory requirements, the guidelines addressed the identified information gap. The research recommends the integration of groundwater monitoring systems into the environmental management system for recycling schemes, to provide for continuous refinement through the interpretation of the knowledge base developed in previous cycles. Adoption of this practice will initiate improved decision making and management processes, and provide for future resource protection and enhancement. / Master of Science (Hons)
96

En debatt om kollektivhus i det tidiga 1930-talet : Den gifta kvinnan möter moderniteten

Elmqvist, Ann-Marie January 2006 (has links)
<p>Denna uppsats handlar om en debatt, som fördes i en brytningstid, då den gifta kvinnans rätt till yrkesarbete ifrågasattes. Ett funktionalistiskt förslag om kollektivhus, där hushållsarbetet och en del av barnavården skulle skötas av kollektivt anställd personal, avsåg att underlätta kvinnans yrkesarbete. Den gällande normen förutsatte, att den gifta kvinnan var hemarbetande och mannen försörjare. Debatten kom att kretsa kring hustruns plikter mot familjen och barnens liv i det kollektiva huset. Här stod bevarare av traditionen mot anhängare av ett nytt familjemönster.</p><p>Syftet har varit att fokusera anhängare och motståndare och analysera deras argument och strategier. Analysen har skett mot bakgrund av den pågående moderniseringsprocessen och den modernitet, som innebar nya livsvillkor för kvinnan och familjen. Yvonne Hirdmans genuskontraktsteori med endast ett dominerande husmoderskontrakt under mellankrigstiden diskuteras och ifrågasätts.</p>
97

A Security Kernel Based on the Lambda-Calculus

Rees, Jonathan A. 13 March 1996 (has links)
Cooperation between independent agents depends upon establishing adegree of security. Each of the cooperating agents needs assurance that the cooperation will not endanger resources of value to that agent. In a computer system, a computational mechanism can assure safe cooperation among the system's users by mediating resource access according to desired security policy. Such a mechanism, which is called a security kernel, lies at the heart of many operating systems and programming environments.The report describes Scheme 48, a programming environment whose design is guided by established principles of operating system security. Scheme 48's security kernel is small, consisting of the call-by-value $lambda$-calculus with a few simple extensions to support abstract data types, object mutation, and access to hardware resources. Each agent (user or subsystem) has a separate evaluation environment that holds objects representing privileges granted to that agent. Because environments ultimately determine availability of object references, protection and sharing can be controlled largely by the way in which environments are constructed. I will describe experience with Scheme 48 that shows how it serves as a robust and flexible experimental platform. Two successful applications of Scheme 48 are the programming environment for the Cornell mobile robots, where Scheme 48 runs with no (other) operating system support; and a secure multi-user environment that runs on workstations.
98

Syntactic Closures

Bawden, Alan, Rees, Jonathan 01 June 1988 (has links)
In this paper we describe {\\it syntactic closures}. Syntactic closures address the scoping problems that arise when writing macros. We discuss some issues raised by introducing syntactic closures into the macro expansion interface, and we compare syntactic closures with other approaches. Included is a complete implementation.
99

Emacs Lisp in Edwin SScheme

Birkholz, Matthew 01 September 1993 (has links)
The MIT-Scheme program development environment includes a general-purpose text editor, Edwin, that has an extension language, Edwin Scheme. Edwin is very similar to another general-purpose text editor, GNU Emacs, which also has an extension language, Emacs Lisp. The popularity of GNU Emacs has lead to a large library of tools written in Emacs Lisp. The goal of this thesis is to implement a useful subset of Emacs Lisp in Edwin Scheme. This subset was chosen to be sufficient for simple operation of the GNUS news reading program.
100

Confidential and Resilient Store of Persistent Web Objects

Mohan, Anoop 01 January 2009 (has links)
Persistent and secure store for web objects is an attractive feature in today?s web world and possess a good potential for exploration. Persistence of a storage mechanism refers to its ability to store an object for extremely long time periods. Resilience refers to its fault tolerance ability or its ability to retrieve the object completely even if a part of that object is lost due to any catastrophic failures like disk failure. It is also important that this storage mechanism is able to store this object in a secure manner. In the current world, usability of any storage mechanism is enhanced multiple times if it could be used from a web interface. This thesis considers different techniques that provide these properties and proposes a storage mechanism that makes use of information dispersal techniques that is suited to store data securely, with an emphasis on availability and resilience. A working prototype of this storage mechanism was developed as a part of this thesis and is made available as a library for program developers. This library provides APIs to store and retrieve data as well as a daemon for error control. The APIs to store and retrieve data also accepts HTTP requests, which increase its usability to web developers. The performance of this prototype was measured and is presented using graphs. Finally a demonstration of the applications of this prototype is also provided.

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